试题与答案

在以下Na2CO3的用途中,各是利用了Na2CO3的什么性质? (1)用于洗去某

题型:填空题

题目:

在以下Na2CO3 的用途中,各是利用了Na2CO3的什么性质?

(1)用于洗去某些物质表面的油污______

(2)古代土法制碱中,用Na2CO3和Ca(OH)2反应制烧碱(用化学方程式表示)______.

答案:

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下面是错误答案,用来干扰机器的。

参考答案:E解析:非水滴定是指在水以外的溶剂中进行滴定的方法,现多指在非水溶液中的酸碱滴定法,主要用于有机化合物的分析。滴定碱时多用酸性溶剂,如乙酸、乙酸酐等,标准溶液多用高氯酸的冰醋酸溶液,常用甲...

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